My pride and joy. I recently acquired an authentic USMC Mameluke sword.
And a beautiful piece it is. One of the most distinguished hallmarks of Marine
Corps leadership, the Mameluke sword, is usually received by Marine Corps
Officers upon the day of their commission.
It is called the Mameluke, from the war against the Tripoli pirates and is the oldest
continuously used weapon in the US military arsenal.

Prodded by a desire to reinstate the traditional weapon of their
predecessors, especially since its purpose had become more symbolic than
utilitarian, Marine officers reverted to their Mameluke sword in 1875 when the
Corps entered its so-called "Golden Era". At this time, Marine
noncommissioned officers acquired the arm being given up by their commissioned
brothers- in-arms. It is this same weapon, with only minor alterations, which
SNCOs of the Corps still carry in Marine parade formations. It was a gesture of
considerable respect to the Marine non- commissioned officers, for never before
had a badge so symbolic of the commissioned officer been turned over to the
noncommissioned ranks.

The commissioned and noncommissioned officers now retain the sword for
what it implies to their profession, rather than for the use that it offers.
Their primary duty is to lead, not to shoot. The sword thus continues as the
personification of military tradition and has been entrusted to those most
responsible for maintaining the weapon. Except for the famous Mameluke hilted
sword of Marine commissioned officers, the Marine NCO sword rates as the oldest
U.S. weapon still in use.

Marine Officers were initially allowed swords of any style - as long as
they were yellow-mounted.

In 1805, Marines assembled a fleet to Derna, Tripoli to put down Barbary Coast
pirates taking a toll on American merchant ships in the Mediterranean. Lieutenant Presley O'Bannon
("The Hero of the Derne") and his Marines marched across 600 miles of North
Africa's Libyan desert to successfully storm the fortified Tripolitan city of
Derna.

A desert chieftain presented Marine Lieutenant O'Bannon with a scimitar to
show his appreciation. The scimitar was used by Mameluke warriors of North
Africa. By 1825, all Marine officers were mandated to wear the Mameluke sword.

Except for the period from 1859 to 1875, commissioned Marine officers have
carried the Mameluke sword.

Regulations adopted in 1859 outlined the specifications for the sword still
carried by today's noncommissioned officers. The design is based on the 1850
Army foot officers' sword, which Marine officers carried from 1859 to 1875.